可以在子类中通过基类名访问函数
// oj4.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include<iostream>
#include<vector>
using namespace std;
class A{
public:
	A(){ cout << "A" << endl; }
	int a;
	virtual void play(){ cout << "i am in A" << endl; }
	void set(int _a)
	{
		this->a=_a;
	}
};
class B: public A
{
public:
	B(){ A::set(8); cout << "B" << endl; }
	void play(){
		
	}
};
class C : public A
{
public:
	C(){ A::set(7); cout << "C" << endl; }
	void play()
	{
	}
};
class D :public C, public B
{
public:
	D(){ cout << "D" << endl; }
	void play()
	{
		cout <<C::a << endl;
	}
};
int main()
{
	D d;
	d.play();
	return 0;
}
/*
"aaa","ab*ac*a"
*/
原文:http://www.cnblogs.com/wuxiangli/p/6166293.html